Chris Pratt stars in The Tomorrow War (Jordan Strauss/Invision/AP) A teaser trailer for Amazon’s military sci-fi thriller “The Tomorrow War” is here, with actor Chris Pratt taking center stage as a time-traveling draftee of a futuristic war. The “Guardians of the Galaxy” and “Jurassic World” star plays high school teacher Dan Forester, who goes from teaching class to futuristic 2051 war fighting in an effort to fend off an alien invasion that threatens the extinction of humanity. What the recruiters promised Forester to get him to dive into such an endeavor must have been impressive. Along the way, Pratt links up with ultra-shredded co-star grandpa J.K. Simmons, who plays the lead’s estranged father. The film also stars Yvonne Strahovski (“The Handmaid’s Tale”), Sam Richardson (“Veep,” “Detroiters”) and Betty Gilpin (“The Hunt”).